Firewall group aliases not working?

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I'm following the official documentation on security zones but when I get to the part about verifying aliases (https://docs.opnsense.org/manual/how-tos/security-zones.html#verify-aliases) I see any of these aliases are empty, is this expected? I'm not sure whether to proceed with the guide as this shows a blank table for me regardless of the FW group I pick. Can anyone help/Does anyone have a clue?

EDIT: In addition, the docs talks about this multiselect feature to create the first rule, all I've got is a dropdown that lets me pick just one source/destination. Is this outdated? I'm reading it wrong, aren't I? :D